CN118637745A - Aeration separation system for chemical wastewater treatment - Google Patents

Abstract

The utility model provides an aeration separation system for chemical industry sewage treatment, relate to chemical industry sewage treatment technical field, including the fixed support base that sets up of level, the fixed supporting bench that is equipped with of top level of support base, the top of supporting bench vertically runs through and is equipped with the aeration separation jar that the bottom set up for the opening, be equipped with mixing element and the separation subassembly of arranging from top to bottom in the aeration separation jar, mixing element is connected with the separation subassembly, the top horizontal slip of support base is equipped with the sliding plate, the top level of sliding plate is equipped with the lift plectane of fixed setting and vertical lift setting side by side, the top of collection jar is the opening setting. The invention solves the problems that the existing aeration precipitation device for chemical wastewater treatment has complicated collection and transfer processes of activated sludge and uneven distribution of the activated sludge inside; the time required for the complete precipitation of the activated sludge is long, and the dissolved oxygen amount of the internal sewage is low; the problem of complicated process of replacing and cleaning the activated sludge.

Description

Aeration separation system for chemical wastewater treatment

Technical Field

The invention relates to the technical field of chemical wastewater treatment, in particular to an aeration separation system for chemical wastewater treatment.

Background Art

A large amount of petrochemical wastewater is generated during the mining and production process of oil. These wastewaters contain a large amount of organic pollutants and solid residues. If they are discharged directly, they are difficult to degrade and will also cause pollution and damage to the environment. Therefore, petrochemical wastewater needs to be purified before it is discharged. When purifying petrochemical wastewater, it is necessary to add the wastewater and activated sludge into the aeration device together. The aeration device can pass oxygen into the wastewater inside it for aeration. Under oxygenated conditions, the biological coagulation, adsorption and oxidation of the activated sludge are used to oxidize, decompose and adsorb the organic pollutants and solid residues in the petrochemical wastewater, thereby achieving the purpose of purifying the wastewater. The purified petrochemical wastewater and activated sludge are discharged into the sedimentation device together, and the activated sludge is separated from the purified water body through natural sedimentation.

The existing aeration sedimentation devices for chemical wastewater treatment have gradually exposed their shortcomings during use, mainly in the following aspects:

First, the collection and transfer process of activated sludge is cumbersome, resulting in low sewage treatment efficiency. Specifically, activated sludge can be reused many times. After the activated sludge in the sedimentation device is completely precipitated, the supernatant needs to be discharged, and the activated sludge in the sedimentation device needs to be collected and transferred to the aeration device to continue to purify the sewage. The collection and transfer of activated sludge require the staff to use corresponding equipment for processing. Therefore, the collection and transfer process of activated sludge is cumbersome, time-consuming and labor-intensive, resulting in low sewage treatment efficiency.

Second, the activated sludge is unevenly distributed in the aeration device, resulting in poor sewage treatment effect. Specifically, the activated sludge itself has a certain weight. When the solid residue is adsorbed, the weight increases. Although the aeration device is equipped with a stirring component for stirring the activated sludge and sewage, the activated sludge will still settle under the action of gravity. The amount of activated sludge in the lower area of the aeration device is much larger than that in the upper area. Therefore, the activated sludge is unevenly distributed in the aeration device, and the organic pollutants and solid residue in the upper area of the aeration device cannot be completely removed, resulting in poor sewage treatment effect.

Third, it takes a long time for the activated sludge to completely settle in the sedimentation device, resulting in a long sewage treatment cycle. Specifically, the activated sludge blocks may be large or small. Large activated sludge can quickly settle to the bottom of the sedimentation device, while small activated sludge blocks require a longer time to complete sedimentation. Therefore, it takes a long time for the activated sludge to completely settle in the sedimentation device, resulting in a long sewage treatment cycle.

Fourth, the dissolved oxygen content of the sewage in the aeration device is low, resulting in poor oxidation effect of activated sludge on organic pollutants. Specifically, the air entering the sewage exists in the form of bubbles, and the bubbles are larger when the aeration device oxygenates the sewage. In addition, the bubbles will merge to form larger bubbles as they move upward. The contact area between the large bubbles and the sewage is small, so the speed of adding oxygen to the sewage is slow, which in turn makes the dissolved oxygen content of the sewage low, resulting in poor oxidation effect of activated sludge on organic pollutants.

Fifth, the replacement and cleaning process of activated sludge is cumbersome. Specifically, when replacing activated sludge that has been reused many times, it is also necessary to discharge the activated sludge into the sedimentation device and then clean the activated sludge with the help of cleaning equipment. Therefore, the replacement and cleaning process of activated sludge is cumbersome, time-consuming and labor-intensive.

In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it.

Summary of the invention

In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide an aeration separation system for chemical wastewater treatment, which can realize the reuse of activated sludge without collecting, transferring and treating the activated sludge, thereby simplifying the sewage treatment process and improving the sewage treatment efficiency;

The system can also evenly distribute the activated sludge in the sewage, improving the sewage purification effect;

The system can also quickly separate the activated sludge from the purified sewage without sedimentation treatment of the activated sludge, thus eliminating the time for sedimentation of the activated sludge and greatly shortening the sewage treatment cycle.

When the system oxygenates the sewage, it can significantly increase the contact area between the bubbles and the sewage, and can also prevent the bubbles from merging in the process of moving upward, thus speeding up the oxygenation of the sewage, increasing the dissolved oxygen content of the sewage, and ensuring the oxidation effect of the activated sludge on the organic pollutants in the sewage.

The system can also automatically clean activated sludge after repeated use, and the cleaning speed is fast.

To solve the above problems, the present invention provides the following technical solutions:

An aeration and separation system for chemical wastewater treatment comprises a support base fixedly arranged horizontally, a support platform fixedly arranged horizontally above the support base, an aeration and separation tank with an opening arranged at the bottom vertically penetrated on the top of the support platform, a mixing component and a separation component arranged up and down are arranged in the aeration and separation tank, the mixing component is connected to the separation component, a sliding plate is horizontally slidably arranged on the top of the support base, a fixed collection tank and a lifting circular plate arranged vertically are arranged in parallel on the top of the sliding plate, the top of the collection tank is open, the inner diameter of the collection tank and the diameter of the lifting circular plate are both larger than the inner diameter of the aeration and separation tank, a slot is arranged on the top of the lifting circular plate, a sealing gasket is laid on the inner bottom of the slot, an aerator is fixedly arranged on the top of the support platform, a plurality of air intake components connected to the exhaust port of the aerator are evenly distributed on the top of the lifting circular plate along the circumferential direction, a feeding valve and an exhaust valve connected to the inner cavity of the aeration and separation tank are fixedly arranged on the top of the aeration and separation tank, and a drain valve is fixedly arranged through the bottom of the lifting circular plate;

The separation assembly comprises a lifting ring which is vertically slidably and sealably connected to the inner wall of the aeration separation tank, a fixed cylinder with an opening at the bottom is coaxially arranged in the lifting ring, a plurality of fixed sector plates are evenly distributed along the circumferential direction on the inner wall of the lifting ring, one end of the fixed sector plate extends obliquely downward and is fixedly connected to the lower outer wall of the fixed cylinder, a lifting cylinder which is slidably and sealably connected to the inner wall of the fixed cylinder is coaxially arranged in the fixed cylinder, a rotatably arranged lifting column is coaxially arranged at the bottom of the lifting cylinder, the outer wall of the lifting column is in frictional contact with the inner wall of the fixed cylinder, the bottom end of the lifting column extends outside the fixed cylinder, and a plurality of escape grooves which are evenly distributed along the circumferential direction on the lower outer wall of the fixed cylinder are evenly distributed.

A plurality of lifting fan-shaped plates are evenly distributed along the circumferential direction inside the lifting ring, and a plurality of the lifting fan-shaped plates and a plurality of fixed fan-shaped plates are alternately arranged along the circumferential direction. The tops of the fixed fan-shaped plates and the lifting fan-shaped plates are provided with a plurality of liquid through-holes arranged therethrough. One end of the lifting fan-shaped plate extends obliquely downward and is fixedly connected to the lower outer wall of the lifting column. The other end of the lifting fan-shaped plate is in frictional contact with the inner wall of the lifting ring. The top and bottom surfaces of the lifting fan-shaped plate and the fixed fan-shaped plate are both arc-shaped surfaces, and the relative ends of the lifting fan-shaped plate and the fixed fan-shaped plate are both inclined structures. When the lifting fan-shaped plate rises until its inclined end abuts against the inclined end of the fixed fan-shaped plate, the plurality of lifting fan-shaped plates respectively enter into the plurality of avoidance grooves and form a complete conical structure with the plurality of fixed fan-shaped plates. The top of the fixed cylinder is connected to the mixing assembly.

As an optimized solution, the mixing assembly includes a rotating cylinder which vertically penetrates the top of the aeration separation tank and has an opening at the bottom, the rotating cylinder is rotatably arranged along a plumb line, a fixed column is coaxially fixedly connected to the top of the fixed cylinder, a rotating rod which is rotatably arranged is coaxially arranged on the top of the fixed column, a plurality of lifting pipes which are coaxially arranged therewith are evenly distributed vertically in the aeration separation tank, the diameters of the plurality of lifting pipes gradually decrease from top to bottom, the upper ports of the lifting pipes extend upward to the lower ports of the lifting pipes adjacent thereto, and are vertically slidably sealed and connected, the upper ports of the lifting pipes located at the top extend upward to the lower ports of the rotating cylinder, and are vertically slidably sealed and connected, the top of the rotating rod extends upward to the lower ports of the lifting pipes located at the bottom, and are vertically slidably sealed and connected, the outer walls of the lifting pipes and the rotating rod are evenly distributed with a plurality of stirring blades along the circumferential direction, a scraper which is in frictional contact with the fixed fan-shaped plate or the top of the lifting fan-shaped plate is fixedly provided at the bottom of the stirring blades installed on the rotating rod, and the scraper is fixedly connected to the stirring blades through a plurality of connecting plates.

As an optimized solution, a number of horizontally fixed crushing knives and guide plates are evenly distributed vertically at the end of the stirring blade, and the crushing knives and the guide plates are alternately arranged. The cross-section of the guide plate is a triangular structure, and the top and bottom of the guide plate are fixedly connected to the crushing knives above and below it.

As an optimized solution, the air intake assembly includes a support cylinder vertically penetrating the lifting circular plate, both ends of the support cylinder are sealed, a driven shaft is coaxially arranged inside the support cylinder, both ends of the driven shaft respectively penetrate the top and bottom of the support cylinder, and are rotatably sealed and connected to the support cylinder, a side wall of the support cylinder is located above the lifting circular plate and is circumferentially provided with a plurality of exhaust pipes connected to its inner cavity, one of the ports of the exhaust pipes is upwardly arranged and fixedly connected to an air distribution disk, a plurality of cutting knives are circumferentially provided on the outer wall of the driven shaft above the air distribution disk, and the inner cavity of the support cylinder is connected to the exhaust port of the aerator.

As an optimized solution, a driven wheel is fixedly mounted on the outer wall of the driven shaft below the support tube, and several of the driven wheels are connected by a transmission belt. A servo motor is fixedly mounted on the bottom of the lifting circular plate, and the output end of the servo motor is fixedly connected to the bottom of one of the driven shafts.

As an optimized solution, two adjacent support cylinders are connected by an arc-shaped connecting pipe, and an air intake pipe connected to its inner cavity is fixedly provided on the outer wall of one of the support cylinders below the lifting circular plate, and one of the ports of the air intake pipe is connected to the exhaust port of the aerator.

As an optimized solution, the inner wall of the aeration separation tank is evenly distributed with two slide grooves along the circumferential direction, and the outer wall of the lifting ring is evenly distributed with two fixed lifting blocks along the circumferential direction. The two lifting blocks are respectively located in the two slide grooves and are correspondingly slidably and sealingly connected to the inner walls of the two slide grooves.

As an optimized solution, a single-thread screw rod rotatably arranged along a plumb line is provided in the slide groove, one end of the single-thread screw rod passes through the lifting block and is threadedly connected to the lifting block, and the two ends of the single-thread screw rod are correspondingly rotatably connected to the inner top and inner bottom of the slide groove.

As an optimized solution, a built-in telescopic cylinder is fixedly provided on the inner top of the fixed cylinder, the telescopic end of the built-in telescopic cylinder is fixedly connected to the lifting cylinder, a built-in motor is fixedly provided inside the lifting cylinder, the output end of the built-in motor passes through the lifting cylinder and is fixedly connected to the lifting column.

As an optimized solution, a U-shaped plate with an open end set downward is fixed on the top of the aeration separation tank, the top of the rotating cylinder is rotatably connected to the inner top of the U-shaped plate, and a control motor is fixed on the top of the U-shaped plate. The output end of the control motor passes through the U-shaped plate and is fixedly connected to the rotating cylinder.

Compared with the prior art, the present invention has the following beneficial effects:

1. With the cooperation of the arc-shaped connecting pipe, the aerator compresses the external air and transmits the air to several supporting cylinders through the air inlet pipe. The air in the supporting cylinder is discharged from the air distribution plate after passing through the exhaust pipe. With the cooperation of the transmission belt and the driven wheel, the servo motor drives several driven shafts to rotate synchronously, and the driven shaft drives the cutting knife to rotate. In the process of the bubbles discharged from the air distribution plate moving upward, the cutting knife can break them into tiny bubbles. The tiny bubbles move upward through the liquid hole and oxygenate the sewage. At the same time, the control motor drives the rotating cylinder to rotate, and then drives several lifting tubes and rotating rods to rotate, thereby driving the stirring blades and scrapers to rotate. The rotating scraper can To prevent the activated sludge from depositing on the top of the fixed fan-shaped plate or the lifting fan-shaped plate, the rotating stirring blades can mix and stir the sewage, activated sludge and air in the aeration separation tank. During the rotation of the stirring blades, the crushing blades can break the bubbles moving upward into small bubbles again to prevent the small bubbles from merging into large bubbles. At the same time, under the guidance of the guide plate, the activated sludge entering between the crushing blades can be quickly discharged, effectively preventing the activated sludge from accumulating between the crushing blades, greatly increasing the contact area between the bubbles and the sewage, thereby accelerating the speed of oxygenating the sewage, increasing the dissolved oxygen content of the sewage, and ensuring the oxidation effect of the activated sludge on the organic pollutants in the sewage;

2. Under the transmission of the transmission rod, the driving motor drives the single-thread screw to rotate, and then drives the lifting block, lifting ring, fixed fan-shaped plate and lifting fan-shaped plate to move upward. During the upward movement of the fixed fan-shaped plate and the lifting fan-shaped plate, the sewage passes through the liquid hole, and the activated sludge gathered in the lower area of the aeration separation tank is pushed to the upper area. The driving motor drives the lifting block, lifting ring, fixed fan-shaped plate and lifting fan-shaped plate to move downward, and under the stirring of the stirring blades and scrapers, the activated sludge is redistributed evenly in the aeration separation tank, realizing the function of evenly distributing the activated sludge in the sewage and improving the sewage purification effect;

3. When the driving motor drives the lifting block, lifting ring, fixed fan-shaped plate and lifting fan-shaped plate to move upward to the highest position, the purified sewage in the upper area of the fixed fan-shaped plate and the lifting fan-shaped plate moves to the lower area through the liquid holes, and the activated sludge in the aeration separation tank is pushed to the upper area. The purified sewage can be quickly discharged by opening the drain valve, realizing the function of quickly separating the activated sludge and the purified sewage without sedimentation treatment of the activated sludge, saving the sedimentation time of the activated sludge and greatly shortening the sewage treatment cycle;

4. After the purified sewage is discharged, the drain valve is closed, and the driving motor drives the lifting block, lifting ring, fixed fan-shaped plate and lifting fan-shaped plate to move downward to the lowest position, and the sewage to be purified is added into the aeration separation tank through the feeding valve, and the above sewage purification process is repeated to purify the sewage, realizing the function of reusing the activated sludge without collecting and transferring the activated sludge, simplifying the sewage treatment process and improving the sewage treatment efficiency;

5. The electrically controlled telescopic cylinder drives the lifting circular plate down to the lowest position, and the aeration separation tank is separated from the lifting circular plate. The hydraulic telescopic cylinder drives the sliding plate to slide horizontally until the collection tank moves to the bottom of the aeration separation tank. The built-in telescopic cylinder drives the lifting cylinder, the lifting column and the lifting fan-shaped plate to move downward to the lowest position. The built-in motor drives the lifting column and the lifting fan-shaped plate to rotate until the lifting fan-shaped plate is completely located under the fixed fan-shaped plate. During the rotation of the lifting fan-shaped plate, the activated sludge on the top is blocked by the end of the fixed fan-shaped plate and enters the collection tank for collection. The control motor drives the scraper to rotate and cleans the arc-shaped sludge on the top of the fixed fan-shaped plate. The cleaned activated sludge enters the collection tank for collection, realizing the function of automatically cleaning the activated sludge that has been reused many times, and the cleaning speed is fast.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG2 is a schematic structural diagram of the bottom of the separation assembly of the present invention;

FIG3 is a schematic diagram of the structure inside the fixed cylinder of the present invention;

FIG4 is a schematic diagram of the structure of the lifting sector plate of the present invention when it is lowered to the lowest position;

FIG5 is a schematic diagram of the structure of a mixing assembly of the present invention;

FIG6 is a schematic diagram of the structure of the guide plate and the crushing knife of the present invention;

FIG7 is a schematic structural diagram of an air intake assembly according to the present invention;

FIG8 is a schematic structural diagram of the bottom of the lifting circular plate of the present invention;

FIG9 is a schematic diagram of the overall structure of the present invention;

FIG10 is a schematic diagram of the structure of the present invention when the activated sludge is discharged externally;

FIG. 11 is a schematic diagram of the structure of the lifting ring of the present invention when it rises to the highest position.

In the figure: 1-support base; 2-sliding plate; 3-collecting tank; 4-separation assembly; 5-aeration separation tank; 6-exhaust valve; 7-feeding valve; 8-mixing assembly; 9-aerator; 10-support platform; 11-intake assembly; 12-lifting circular plate; 13-support rod; 14-top plate; 15-electric telescopic cylinder; 16-hydraulic telescopic cylinder; 17-fixing rod; 18-fixed fan-shaped plate; 19-lifting fan-shaped plate; 20-lifting ring; 21-liquid hole; 22-lifting column; 23-fixed cylinder; 24-avoidance groove; 25-fixed column; 26-rotating rod; 27-lifting tube; 28-U-shaped plate ;29-control motor;30-rotating cylinder;31-driving motor;32-stirring blade;33-transmission rod;34-slide;35-single threaded rod;36-connecting plate;37-scraper;38-lifting block;39-built-in telescopic cylinder;40-built-in motor;41-lifting cylinder;42-support cylinder;43-exhaust pipe;44-gas distribution disc;45-driven shaft;46-cutting knife;47-slot;48-sealing pad;49-drain valve;50-servo motor;51-arc connecting pipe;52-driven wheel;53-transmission belt;54-intake pipe;55-guide plate;56-crushing knife.

DETAILED DESCRIPTION

The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

As shown in Figures 1 to 11, an aeration separation system for chemical wastewater treatment includes a horizontally fixed support base 1, a support platform 10 is horizontally fixed above the support base 1, an aeration separation tank 5 with an opening at the bottom is vertically penetrated on the top of the support platform 10, a mixing component 8 and a separation component 4 arranged up and down are arranged in the aeration separation tank 5, the mixing component 8 is connected to the separation component 4, a sliding plate 2 is horizontally slidably provided on the top of the support base 1, and a fixed collection tank 3 and a lifting circular plate 1 arranged vertically are horizontally arranged on the top of the sliding plate 2. 2. The top of the collecting tank 3 is open, the inner diameter of the collecting tank 3 and the diameter of the lifting circular plate 12 are larger than the inner diameter of the aeration separation tank 5, a slot 47 is provided on the top of the lifting circular plate 12, a sealing gasket 48 is laid on the inner bottom of the slot 47, an aerator 9 is fixedly provided on the top of the support platform 10, a plurality of air intake components 11 connected to the exhaust port of the aerator 9 are evenly distributed along the circumferential direction on the top of the lifting circular plate 12, a feeding valve 7 and an exhaust valve 6 connected to the inner cavity of the aeration separation tank 5 are fixedly provided on the top of the aeration separation tank 5, and a drain valve 49 is fixedly provided on the bottom of the lifting circular plate 12;

The separation assembly 4 includes a lifting ring 20 which is vertically slidably sealed to the inner wall of the aeration separation tank 5, a fixed cylinder 23 with an opening at the bottom is coaxially arranged in the lifting ring 20, a plurality of fixed sector plates 18 are evenly distributed along the circumferential direction on the inner wall of the lifting ring 20, one end of the fixed sector plate 18 extends obliquely downward and is fixedly connected to the lower outer wall of the fixed cylinder 23, a lifting cylinder 41 which is coaxially connected to the inner wall of the fixed cylinder 23 and slidably sealed therewith is arranged in the fixed cylinder 23, a lifting column 22 which is rotatably arranged is coaxially arranged at the bottom of the lifting cylinder 41, the outer wall of the lifting column 22 is in frictional contact with the inner wall of the fixed cylinder 23, the bottom end of the lifting column 22 extends to the outside of the fixed cylinder 23, and a plurality of escape grooves 24 which are evenly distributed along the circumferential direction on the lower outer wall of the fixed cylinder 23 are evenly distributed.

A plurality of lifting fan-shaped plates 19 are uniformly distributed in the lifting ring 20 along the circumferential direction. The plurality of lifting fan-shaped plates 19 and the plurality of fixed fan-shaped plates 18 are alternately arranged along the circumferential direction. The tops of the fixed fan-shaped plates 18 and the lifting fan-shaped plates 19 are provided with a plurality of liquid-through holes 21 arranged therethrough. One end of the lifting fan-shaped plate 19 extends obliquely downward and is fixedly connected to the lower outer wall of the lifting column 22. The other end of the lifting fan-shaped plate 19 is in frictional contact with the inner wall of the lifting ring 20. The top and bottom surfaces of the lifting fan-shaped plate 19 and the fixed fan-shaped plate 18 are both arc-shaped surfaces. The opposite ends of the lifting fan-shaped plate 19 and the fixed fan-shaped plate 18 are both inclined structures. When the lifting fan-shaped plate 19 rises until its inclined end abuts against the inclined end of the fixed fan-shaped plate 18, the plurality of lifting fan-shaped plates 19 respectively enter into the plurality of avoidance grooves 24 and form a complete conical structure with the plurality of fixed fan-shaped plates 18. The top of the fixed cylinder 23 is connected to the mixing assembly 8.

When the lifting circular plate 12 rises to the bottom end of the aeration separation tank 5 and enters into the slot 47 and contacts the sealing gasket 48, the lower port of the aeration separation tank 5 is closed, and sewage and activated sludge can be added into the aeration separation tank 5 through the feeding valve 7;

The aerator 9 can compress the external air and then transport it to a plurality of air intake components 11, and the air intake components 11 can be used to oxygenate the aeration separation tank 5, and in the oxygenation process, large bubbles in the sewage can be broken into small bubbles, and the sewage, activated sludge and oxygen in the aeration separation tank 5 can be stirred and mixed by the mixing component 8, and the rising bubbles can be broken again to prevent the small bubbles from merging into large bubbles, which greatly increases the contact area between the bubbles and the sewage, thereby accelerating the speed of oxygenating the sewage, increasing the dissolved oxygen content of the sewage, and ensuring the oxidation effect of the activated sludge on the organic pollutants in the sewage;

After the sewage is purified for a period of time, part of the activated sludge is deposited in the area below the aeration separation tank 5, and the lifting ring 20 slides upward. With the cooperation of the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19, the activated sludge in the area below the aeration separation tank 5 is pushed to the upper area, and the lifting ring 20 slides downward. Under the stirring of the mixing component 8, the activated sludge is redistributed evenly in the aeration separation tank 5, thereby realizing the function of evenly distributing the activated sludge in the sewage and improving the sewage purification effect;

After the sewage purification is completed, when the lifting ring 20 slides upward to the highest position, the purified sewage in the upper area of the fixed sector plate 18 and the lifting sector plate 19 moves to the lower area through the liquid hole 21, and the activated sludge in the aeration separation tank 5 is pushed to the upper area. The purified sewage can be quickly discharged by opening the drain valve 49, realizing the function of quickly separating the activated sludge and the purified sewage without sedimentation treatment of the activated sludge, saving the sedimentation time of the activated sludge, and greatly shortening the sewage treatment cycle;

After the purified sewage is discharged, the drain valve 49 is closed, the lifting ring 20 slides downward to the lowest position, and the sewage to be purified is added to the aeration separation tank 5 through the feeding valve 7, and then the above-mentioned sewage purification process is repeated to purify the sewage, thereby realizing the function of reusing the activated sludge without collecting, transferring and treating the activated sludge, simplifying the sewage treatment process and improving the sewage treatment efficiency;

When cleaning the sludge that has been reused many times, the lifting circular plate 12 is lowered to the lowest position, and the sliding plate 2 slides horizontally until the collection tank 3 moves to the bottom of the aeration separation tank 5. The lifting cylinder 41 drives the lifting column 22 and the lifting fan-shaped plate 19 to move downward to the lowest position. The lifting column 22 drives the lifting fan-shaped plate 19 to rotate until the lifting fan-shaped plate 19 is completely located below the fixed fan-shaped plate 18. During the rotation of the lifting fan-shaped plate 19, the activated sludge on the top is blocked by the end of the fixed fan-shaped plate 18 and enters the collection tank 3 for collection. The mixing component 8 can clean the arc-shaped sludge on the top of the fixed fan-shaped plate 18 and enter the collection tank 3 for collection, thereby realizing the function of automatically cleaning the activated sludge that has been reused many times, and the cleaning speed is fast.

The mixing assembly 8 includes a rotating cylinder 30 which vertically penetrates the top of the aeration separation tank 5 and is open at the bottom. The rotating cylinder 30 is rotatably arranged along the plumb line. A fixed column 25 is coaxially fixed to the top of the fixed cylinder 23. A rotating rod 26 which is rotatably arranged is coaxially arranged on the top of the fixed column 25. A plurality of lifting pipes 27 which are coaxially arranged therewith are evenly distributed vertically in the aeration separation tank 5. The diameters of the plurality of lifting pipes 27 gradually decrease from top to bottom. The upper end of the lifting pipe 27 extends upward to the lower end of the adjacent lifting pipe 27 above it, and is vertically slidably sealed and connected. The upper end of the lifting pipe 27 is located at the bottom of the aeration separation tank 5. The upper end of the upper lifting tube 27 extends upward to the lower end of the rotating cylinder 30 and is vertically slidably sealed. The top of the rotating rod 26 extends upward to the lower end of the lifting tube 27 located at the bottom and is vertically slidably sealed. The outer walls of the lifting tube 27 and the rotating rod 26 are uniformly provided with a plurality of stirring blades 32 along the circumferential direction. The bottom of the stirring blade 32 installed on the rotating rod 26 is fixedly provided with a scraper 37 that is in frictional contact with the fixed fan plate 18 or the top of the lifting fan plate 19. The scraper 37 is fixedly connected to the stirring blade 32 through a plurality of connecting plates 36.

When the lifting ring 20 slides upward, the rotating rod 26 and the lifting tube 27 both slide upward to avoid it; the scraper 37 can not only prevent the activated sludge from depositing on the top of the fixed fan plate 18 or the lifting fan plate 19, but also clean the activated sludge on the top of the fixed fan plate 18 during the discharge of the activated sludge.

A plurality of horizontally fixed crushing knives 56 and guide plates 55 are evenly distributed vertically at the end of the stirring blade 32. The crushing knives 56 and the guide plates 55 are alternately arranged. The cross section of the guide plate 55 is a triangular structure, and the top and bottom of the guide plate 55 are fixedly connected to the crushing knives 56 above and below it;

When the stirring blade 32 rotates, the crushing blade 56 can break the bubbles moving upward into small bubbles again to prevent the small bubbles from merging into large bubbles; under the guidance of the guide plate 55, the activated sludge entering between the crushing blades 56 can be quickly discharged, effectively preventing the activated sludge from accumulating between the crushing blades 56.

The air intake assembly 11 includes a support cylinder 42 that vertically penetrates the lifting circular plate 12, and both ends of the support cylinder 42 are sealed. A driven shaft 45 that is rotatably arranged is coaxially arranged in the support cylinder 42. Both ends of the driven shaft 45 respectively penetrate the top and bottom of the support cylinder 42 and are rotatably sealed and connected to the support cylinder 42. The side wall of the support cylinder 42 is located above the lifting circular plate 12 and is uniformly distributed along the circumferential direction with a plurality of exhaust pipes 43 that are connected to its inner cavity. One of the ports of the exhaust pipes 43 is upwardly arranged and fixedly connected to a gas distribution disk 44 that is connected. The outer wall of the driven shaft 45 is located above the gas distribution disk 44 and is uniformly distributed along the circumferential direction with a plurality of cutting knives 46. The inner cavity of the support cylinder 42 is connected to the exhaust port of the aerator 9.

The aerator 9 transports the compressed air into the support tube 42, and the air is discharged from the air distribution plate 44 through the exhaust pipe 43. The driven shaft 45 can drive the cutting knife 46 to rotate. When the bubbles move upward, the cutting knife 46 can break them into tiny bubbles and move them upward through the liquid hole 21. The excess gas is discharged through the exhaust valve 6. The air moving upward can also cause the sewage in the area below the fixed fan plate 18 and the lifting fan plate 19 to circulate with the sewage in the area above.

A driven wheel 52 is fixedly mounted on the outer wall of the driven shaft 45 below the support tube 42 . A plurality of driven wheels 52 are connected via a transmission belt 53 . A servo motor 50 is fixedly mounted on the bottom of the lifting circular plate 12 . The output end of the servo motor 50 is fixedly connected to the bottom of one of the driven shafts 45 .

Two adjacent support tubes 42 are connected via an arc-shaped connecting pipe 51 , and an air intake pipe 54 connected to the inner cavity of one of the support tubes 42 is fixedly disposed on the outer wall below the lifting circular plate 12 , and one of the ports of the air intake pipe 54 is connected to the exhaust port of the aerator 9 .

The inner wall of the aeration separation tank 5 is evenly distributed with two slide grooves 34 along the circumferential direction, and the outer wall of the lifting ring 20 is evenly distributed with two fixed lifting blocks 38 along the circumferential direction. The two lifting blocks 38 are respectively located in the two slide grooves 34 and are correspondingly slidably and sealingly connected to the inner walls of the two slide grooves 34.

A single-thread screw 35 is provided in the slide groove 34 and is rotatably arranged along the plumb line. One end of the single-thread screw 35 passes through the lifting block 38 and is threadedly connected to the lifting block 38. The two ends of the single-thread screw 35 are rotatably connected to the inner top and inner bottom of the slide groove 34 accordingly.

Two drive motors 31 are fixedly provided on the top of the aeration separation tank 5. Two transmission rods 33 are embedded inside the aeration separation tank 5 and are arranged to rotate along a plumb line. The two ends of the transmission rods 33 extend upward and downward respectively, and are fixedly connected to the output end of the drive motor 31 and the top end of the single-thread screw 35.

A built-in telescopic cylinder 39 is fixedly provided on the inner top of the fixed cylinder 23 , and the telescopic end of the built-in telescopic cylinder 39 is fixedly connected to the lifting cylinder 41 .

A built-in motor 40 is fixedly disposed inside the lifting cylinder 41 . An output end of the built-in motor 40 passes through the lifting cylinder 41 and is fixedly connected to the lifting column 22 .

Support rods 13 are fixedly provided at the four corners of the bottom of the support platform 10 , and the bottoms of the support rods 13 are fixedly connected to the support base 1 .

The collecting tank 3 is fixedly connected to the sliding plate 2 via two fixing rods 17 . Two electrically controlled telescopic cylinders 15 are fixedly provided on the top of the sliding plate 2 . The telescopic ends of the two electrically controlled telescopic cylinders 15 are both fixedly connected to the lifting circular plate 12 .

Two hydraulic telescopic cylinders 16 are fixedly provided on the top of the support base 1 , a top plate 14 is fixedly provided on the top of the sliding plate 2 , opposite side walls of the top plate 14 extend outside the sliding plate 2 , and telescopic ends of the two hydraulic telescopic cylinders 16 are fixedly connected to the top plate 14 .

A U-shaped plate 28 with its open end downwardly disposed is fixedly disposed on the top of the aeration separation tank 5, and the top of the rotating drum 30 is rotatably connected to the inner top of the U-shaped plate 28. A control motor 29 is fixedly disposed on the top of the U-shaped plate 28, and the output end of the control motor 29 passes through the U-shaped plate 28 and is fixedly connected to the rotating drum 30.

The working principle of this device is:

Activated sludge and sewage to be treated are added to the aeration separation tank 5 through the feeding valve 7. With the cooperation of the arc-shaped connecting pipe 51, the oxygenator 9 compresses the external air and transports the air to the plurality of support cylinders 42 through the air inlet pipe 54. The air in the support cylinder 42 is discharged from the air distribution plate 44 after passing through the exhaust pipe 43. The servo motor 50 drives one of the driven shafts 45 to rotate. With the cooperation of the transmission belt 53 and the driven wheel 52, the other driven shafts 45 rotate synchronously. The driven shaft 45 drives the cutting knife 46 to rotate. The bubbles discharged from the air distribution plate 44 are broken into tiny bubbles by the cutting knife 46 during the upward movement. The tiny bubbles move upward through the liquid through hole 21 and oxygenate the sewage. At the same time, the control motor 29 drives the rotating cylinder 30 to rotate, thereby driving the plurality of lifting pipes 27 and the rotating wheel 28. The rotating rod 26 rotates, thereby driving the stirring blade 32 and the scraper 37 to rotate. The rotating scraper 37 can prevent the activated sludge from being deposited on the top of the fixed fan plate 18 or the lifting fan plate 19. The rotating stirring blade 32 can mix and stir the sewage, activated sludge and air in the aeration separation tank 5. During the rotation of the stirring blade 32, the crushing knife 56 can break the bubbles moving upward into small bubbles again to prevent the small bubbles from merging into large bubbles. At the same time, under the guidance of the guide plate 55, the activated sludge entering between the crushing knives 56 can be quickly discharged, effectively preventing the activated sludge from accumulating between the crushing knives 56, greatly increasing the contact area between the bubbles and the sewage, thereby accelerating the speed of oxygenating the sewage, increasing the dissolved oxygen content of the sewage, and ensuring the oxidation effect of the activated sludge on the organic pollutants in the sewage;

After the sewage is purified for a period of time, part of the activated sludge is deposited in the lower area of the aeration separation tank 5. Under the transmission of the transmission rod 33, the driving motor 31 drives the single-threaded screw 35 to rotate, thereby driving the lifting block 38, the lifting ring 20, the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19 to move upward. During the upward movement of the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19, the sewage passes through the liquid hole 21, and the activated sludge in the lower area of the aeration separation tank 5 is pushed to the upper area. The driving motor 31 drives the lifting block 38, the lifting ring 20, the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19 to move downward, and under the stirring of the stirring blade 32 and the scraper 37, the activated sludge is redistributed evenly in the aeration separation tank 5, thereby realizing the function of evenly distributing the activated sludge in the sewage and improving the purification effect of the sewage.

After the sewage in the aeration separation tank 5 is purified, the driving motor 31 drives the lifting block 38, the lifting ring 20, the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19 to move upward to the highest position. The purified sewage in the upper area of the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19 moves to the lower area through the liquid hole 21, and the activated sludge in the aeration separation tank 5 is pushed to the upper area. The purified sewage can be quickly discharged by opening the drain valve 49, realizing the function of quickly separating the activated sludge and the purified sewage without sedimentation treatment of the activated sludge, saving the sedimentation time of the activated sludge, and greatly shortening the sewage treatment cycle;

After the purified sewage in the aeration separation tank 5 is discharged, the drain valve 49 is closed, and the driving motor 31 drives the lifting block 38, the lifting ring 20, the fixed fan-shaped plate 18 and the lifting fan-shaped plate 19 to move downward to the lowest position, and the sewage to be purified is added to the aeration separation tank 5 through the feeding valve 7, and then the above-mentioned sewage purification process is repeated to purify the sewage, thereby realizing the function of reusing the activated sludge without collecting, transferring and treating the activated sludge, simplifying the sewage treatment process and improving the sewage treatment efficiency;

When cleaning the sludge that has been reused many times, the electrically controlled telescopic cylinder 15 drives the lifting circular plate 12 to descend to the lowest position, the aeration separation tank 5 is separated from the lifting circular plate 12, and the hydraulic telescopic cylinder 16 drives the sliding plate 2 to slide horizontally until the collection tank 3 moves to the bottom of the aeration separation tank 5, and the built-in telescopic cylinder 39 drives the lifting cylinder 41, the lifting column 22 and the lifting fan-shaped plate 19 to move downward to the lowest position, and the built-in motor 40 drives the lifting column 22 and the lifting fan-shaped plate 19 to rotate until the lifting fan-shaped plate 19 is completely located below the fixed fan-shaped plate 18. During the rotation of the lifting fan-shaped plate 19, the activated sludge on the top is blocked by the end of the fixed fan-shaped plate 18 and enters the collection tank 3 for collection, and the control motor 29 drives the scraper 37 to rotate and cleans the arc-shaped sludge on the top of the fixed fan-shaped plate 18. The cleaned activated sludge enters the collection tank 3 for collection, thereby realizing the function of automatically cleaning the activated sludge that has been reused many times, and the cleaning speed is fast.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims (10)

1. An aeration separation system for chemical wastewater treatment, characterized in that it comprises a support base (1) which is fixedly arranged horizontally, a support platform (10) is fixedly arranged horizontally above the support base (1), an aeration separation tank (5) with an opening at the bottom is vertically penetrated through the top of the support platform (10), a mixing assembly (8) and a separation assembly (4) arranged vertically are arranged in the aeration separation tank (5), the mixing assembly (8) is connected to the separation assembly (4), a sliding plate (2) is horizontally slidably arranged on the top of the support base (1), a collection tank (3) and a lifting circular plate (12) which are fixedly arranged horizontally and parallelly arranged on the top of the sliding plate (2), the collection tank (3) and the lifting circular plate (12) which are vertically lifted are arranged in parallel, and the collection tank (3) and the lifting circular plate (12) are fixedly arranged horizontally and parallelly arranged on the top of the sliding plate (2), and the collection tank (3) and the lifting circular plate (12) which are vertically lifted are arranged in parallel. The top of the tank (3) is open, the inner diameter of the collection tank (3) and the diameter of the lifting circular plate (12) are both larger than the inner diameter of the aeration separation tank (5), a slot (47) is provided on the top of the lifting circular plate (12), and a sealing gasket (48) is laid on the inner bottom of the slot (47), an aerator (9) is fixedly provided on the top of the support platform (10), a plurality of air intake components (11) connected to the exhaust port of the aerator (9) are evenly distributed along the circumferential direction on the top of the lifting circular plate (12), a feeding valve (7) and an exhaust valve (6) connected to the inner cavity of the aeration separation tank (5) are fixedly provided on the top of the lifting circular plate (12), and a drainage valve (49) is fixedly provided through the bottom of the lifting circular plate (12); The separation assembly (4) comprises a lifting ring (20) which is vertically slidably sealed to the inner wall of the aeration separation tank (5); a fixed cylinder (23) with an opening at the bottom is coaxially arranged inside the lifting ring (20); a plurality of fixed sector plates (18) are evenly distributed along the circumferential direction on the inner wall of the lifting ring (20); one end of the fixed sector plate (18) extends obliquely downward and is fixedly connected to the lower outer wall of the fixed cylinder (23); a lifting cylinder (41) is coaxially arranged inside the fixed cylinder (23) which is slidably sealed to the inner wall thereof; a lifting column (22) is coaxially arranged at the bottom of the lifting cylinder (41) which is rotatably arranged; the outer wall of the lifting column (22) is in frictional contact with the inner wall of the fixed cylinder (23); the bottom end of the lifting column (22) extends outside the fixed cylinder (23); and a plurality of escape grooves (24) are evenly distributed along the circumferential direction on the lower outer wall of the fixed cylinder (23). A plurality of lifting fan-shaped plates (19) are evenly distributed in the circumferential direction inside the lifting ring (20). The plurality of lifting fan-shaped plates (19) and the plurality of fixed fan-shaped plates (18) are alternately arranged in the circumferential direction. The tops of the fixed fan-shaped plates (18) and the lifting fan-shaped plates (19) are each provided with a plurality of liquid through holes (21) arranged therethrough. One end of the lifting fan-shaped plate (19) extends obliquely downward and is fixedly connected to the lower outer wall of the lifting column (22). The other end of the lifting fan-shaped plate (19) is in frictional contact with the inner wall of the lifting ring (20). The top and bottom surfaces of the descending fan-shaped plate (19) and the fixed fan-shaped plate (18) are both arc-shaped surfaces, and the opposite ends of the lifting fan-shaped plate (19) and the fixed fan-shaped plate (18) are both inclined structures. When the lifting fan-shaped plate (19) rises until its inclined end abuts against the inclined end of the fixed fan-shaped plate (18), a plurality of the lifting fan-shaped plates (19) respectively enter into a plurality of avoidance grooves (24) and form a complete conical structure with a plurality of the fixed fan-shaped plates (18), and the top of the fixed cylinder (23) is connected to the mixing assembly (8). 2. The aeration separation system for treating chemical wastewater according to claim 1 is characterized in that: the mixing assembly (8) comprises a rotating cylinder (30) which vertically penetrates the top of the aeration separation tank (5) and has an opening at the bottom, the rotating cylinder (30) is rotatably arranged along a plumb line, a fixed column (25) is coaxially fixedly connected to the top of the fixed cylinder (23), a rotating rod (26) is coaxially arranged to rotate at the top of the fixed column (25), a plurality of lifting pipes (27) coaxially arranged therewith are evenly distributed vertically in the aeration separation tank (5), the diameters of the plurality of lifting pipes (27) gradually decrease from top to bottom, and the upper end of the lifting pipe (27) extends upward to the lower end of the adjacent lifting pipe (27) above it. The upper end of the lifting tube (27) located at the top extends upward to the lower end of the rotating cylinder (30) and is vertically slidably sealed. The top of the rotating rod (26) extends upward to the lower end of the lifting tube (27) located at the bottom and is vertically slidably sealed. The outer walls of the lifting tube (27) and the rotating rod (26) are uniformly provided with a plurality of stirring blades (32) along the circumferential direction. The stirring blades (32) mounted on the rotating rod (26) are fixedly provided with scrapers (37) at the bottom thereof, which are in frictional contact with the top of the fixed sector plate (18) or the lifting sector plate (19). The scrapers (37) are fixedly connected to the stirring blades (32) via a plurality of connecting plates (36). 3. The aeration separation system for chemical wastewater treatment according to claim 2 is characterized in that: a plurality of horizontally fixed crushing knives (56) and guide plates (55) are evenly distributed vertically at the end of the stirring blade (32), a plurality of the crushing knives (56) and a plurality of guide plates (55) are alternately arranged, a cross-section of the guide plate (55) is a triangular structure, and the top and bottom of the guide plate (55) are fixedly connected to the crushing knives (56) above and below it. 4. The aeration separation system for treating chemical wastewater according to claim 1 is characterized in that: the air intake assembly (11) comprises a support cylinder (42) vertically penetrating the lifting circular plate (12), both ends of the support cylinder (42) are sealed, a driven shaft (45) is coaxially arranged in the support cylinder (42) for rotation, the two ends of the driven shaft (45) respectively penetrate the top and the bottom of the support cylinder (42) and are rotationally sealed and connected to the support cylinder (42), a plurality of exhaust pipes (43) connected to the inner cavity of the support cylinder (42) are uniformly distributed along the circumferential direction at a position above the lifting circular plate (12), one of the ports of the exhaust pipes (43) is arranged upward and is fixedly connected to a gas distribution plate (44) arranged in communication, a plurality of cutting knives (46) are uniformly distributed along the circumferential direction at a position above the gas distribution plate (44) on the outer wall of the driven shaft (45), and the inner cavity of the support cylinder (42) is connected to the exhaust port of the aerator (9). 5. The aeration separation system for chemical wastewater treatment according to claim 4 is characterized in that: a driven wheel (52) is fixedly mounted on the outer wall of the driven shaft (45) at a position below the support cylinder (42), a plurality of the driven wheels (52) are connected by a transmission belt (53), a servo motor (50) is fixedly mounted at the bottom of the lifting circular plate (12), and an output end of the servo motor (50) is fixedly connected to the bottom of one of the driven shafts (45). 6. The aeration separation system for chemical wastewater treatment according to claim 5 is characterized in that: two adjacent support cylinders (42) are connected by an arc-shaped connecting pipe (51), and an air intake pipe (54) connected to its inner cavity is fixedly provided on the outer wall of one of the support cylinders (42) at a position below the lifting circular plate (12), and one of the ports of the air intake pipe (54) is connected to the exhaust port of the aerator (9). 7. The aeration separation system for chemical wastewater treatment according to claim 1 is characterized in that: the inner wall of the aeration separation tank (5) is evenly distributed with two slide grooves (34) along the circumferential direction, and the outer wall of the lifting ring (20) is evenly distributed with two fixed lifting blocks (38) along the circumferential direction, and the two lifting blocks (38) are respectively located in the two slide grooves (34) and are correspondingly slidably and sealingly connected to the inner walls of the two slide grooves (34). 8. The aeration separation system for chemical wastewater treatment according to claim 7 is characterized in that: a single-thread screw (35) rotatably arranged along a plumb line is provided in the chute (34), one end of the single-thread screw (35) passes through a lifting block (38) and is threadedly connected to the lifting block (38), and two ends of the single-thread screw (35) are rotatably connected to the inner top and inner bottom of the chute (34) correspondingly. 9. The aeration separation system for chemical wastewater treatment according to claim 1 is characterized in that: a built-in telescopic cylinder (39) is fixedly provided on the inner top of the fixed cylinder (23), the telescopic end of the built-in telescopic cylinder (39) is fixedly connected to the lifting cylinder (41), a built-in motor (40) is fixedly provided inside the lifting cylinder (41), and the output end of the built-in motor (40) passes through the lifting cylinder (41) and is fixedly connected to the lifting column (22). 10. The aeration separation system for chemical wastewater treatment according to claim 3 is characterized in that: a U-shaped plate (28) with an open end arranged downward is fixedly provided on the top of the aeration separation tank (5), the top of the rotating cylinder (30) is rotatably connected to the inner top of the U-shaped plate (28), a control motor (29) is fixedly provided on the top of the U-shaped plate (28), and the output end of the control motor (29) passes through the U-shaped plate (28) and is fixedly connected to the rotating cylinder (30).